Water-cooled valve or damper.



L. L. KNOX.

WATER COOLED VALVE 0R DAMPER.

APPLICATION YFILED' JULY 6, 1914.

1, M2, 1 809 v Patented June 8, 1915.

2 SHEETSSHEET l.

WITNESSES INVENTOR L. L. KNOX. WATER COOLED VALVE ORVDAMPER.

APPLICATION FILED JULY'G. 1914.

PzitentedJune s, 1915.

2 SHEETS-SHEET 2.

nares earns LUTHER KNOX, OF AVALON, PENNSYLVANIA, ASSIGNOR. TO KNOX PRESSED AND YVELDED' STEEL COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

To all whom 1' 15 may] concern:

Be it known that I, LUTHER L. Knox, a citizen of'the United States, residing at Avalon, in the county of Allegheny and State of Pennsylvania. have invented a new and useful ater-Cooled Valve or Damper,

of which the following is a full, clear, and exact (lQSCllPtlUll, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a sectional elevation, partly broken away, of a valve or damper embodying my invention. Fig. 2 is a' section on the line 11-11 of Fig. 1. Fig. 3 is a front elevation of the water cooled frame. Fig. 4 is a top plan view of the same, and Fig. 5 is a section on the line VV of Fig. 3.

11y invention has relation to water-cooled valves or dampers for use in furnace flues, and is particularly advantageous for use as a controlling valve or damper in connection with the air and gas flues of reversing regenerator furnaces.

The present invention is an improvement upon the valve or damper described and claimed in my pending application, Serial No. 7 62,230, filed April 19, 1913. I

The object of the present invention is to provide a valve or damper of the general construction described and claimed in said application, but having certain improvements whereby the movable valve or damper member may be more effectively seated and operated.

Referring to the accompanying drawing the numeral 2 designates a portion of a flue adapted to be controlled by my improved valve or damper.

3 designates a frame or seating member preferably formed of sheet metal and adapted to be set in the flue 2, as indicated in Fig. 2. This frame or seating member consists of an upper portion 3 having an'inner wall 4 and an outer wall 5,.the. two walls being separated to form a water chamber 6 entirely surrounding the inner wall. The lower portion of the frame or seating: member has a flue opening 7 therethrough in line with the flue passage 2;. The front portion of the water chamber 6 terminates at its bottom adjacent to the top of the opening 7, whereas the rear and side portions'of said water chamber extend downwardly to the bottom of the opening 7 where they are connected by the hollow transverse portion 8.-

' Specification of Letters Patent.

Patented Jnne'S l H Application filed July 6, 1914. Serial No. 849,166,

of the frame or seating member'and to be raised and lowered to cover or uncover any desired portion. of the flue opening 7. It s provided with the front and rear dependmg aprons 10 which are. arranged to extend downwardly within the front a'ndrear water chambers in the portion 3*, and thus;

form an eflicient seal against the escape of any of'the flue gases around the valve. The

valve or damper body is preferably open at the top, the portions 11 which connect the aprons 10 with the valve body and the up- 'ward extensions 12 of said aprons forming a water pan at the top of'said body.

The space within the inner shell 4 in which the valve or damper body'slides is preferably made considerably wider (.meas-- ured in the direction of the axis of the flue 2)- than the thickness of said body, so that the latter will not only slide freely therein; but, owing to the oblique seatin of the parts will, by gravity, maintain an e cient seating against the rear position of the seating memher or frame. Any suitable means may be provided for maintaining a water circulation through the frame or seating member and the valve or damper member.

In the drawing I have shown a water supply pipe 13 as extending downwardly to a point near the; bottom of the valve-body where it dischargeswithinv the interior of said body: The heated water rises into the pan at the top of the body and thenceflows down to the lower end-portions of the-side legs of the frame or seating member through the pipes 14 which open at their upper ends into said pan through the portions 11. As the water is further heated in the frame-or seating member, it rises until it reaches an overflow opening at 15 into a box or trough 16 havinga discharge17, by means of which it is carried away. In this manner an effective circulation is main-- tained, the water flowing first through the body of the valve or damper and then in series through the frame or seating meming through its lower portion, and a hollow her. All the circulating pipes are carried in the parts themselves, independently of the flue walls, so that the valve can be set as a unit, without the necessity for passing thepipes separately through the flue walls.

The frame or seating member may be provided with the supporting flanges 18 which rest upon the top of the flue 2. The overflow box or trough 16 may be conveiiiently formed as an end extension'of the upper part of the portion 3 of the frame or seating member.

19 indicates any suitable actuating connection for raising and lowering the valve or damper. By seating the parts in an oblique position the valve will maintain its seat under allconditions, thus avoiding any necessity for the provision of special means for crowding the valve against the seating surfaces of the frame. This seating will be maintained since the valvewill clear itself of deposits of tar and other carbonaceous matter carried by the flue gases. The-inclination of the valve and seating member is in such a direction relatively-to the flow of gases through the flue 2 as to cause the pressure of the gases, when the valve is closed to press the valve to its seat. -The arrow in Fig. 2 indicates the direction in which the gases flow when thevalve is closed. f

I do not desire to limit myself to the -details of construction and arrangement as herein shown and described, as various changes can be made in parts without departing from the spirit and scope of my invention as defined in the appended claims.

*1 claim:

1. A valve or damper comprising a hollow water-cooled frame set in an oblique position in a flue wall and havinga flue opening through its lower portion, and a hollow water-cooled valve or damper body arranged to slide and seat within said frame in an inclined position whereby the said body is held by gravity in close contact with the-adjacent surface of the frame against which it bears, substantially as described.

2. A valve or damper comprising a holwater-cooled valve or damper body arranged to slide and seat within said frame in an inclined position whereby the said body is held by gravity in close contact with the adjacent surface of the frame against which it bears, said frame having open front and rear water chambers extending above the.

top of the flue and the valve or damper having depending aprons which extend within s'aidchambers, substantially as described.

3 A hollow valve seating member having a flue opening therethrough and comprising a casing formed with inner and outer walls,

waist the inner wall surrounding a. transverse vertical opening which extends downwardly" within the casing from the upper end thereof to form an inclosing guideway for a valve or damper, the front portion .of said guideway terminating at its bottom at about the top of the flue opening and the rear portion extending downwardly .below said opening, said'casing having openings at its upper end to receive= seating members on v the valve or damper, and means for maintaining a circulation of water through-said member, substantially as described.

4. A valve or damper comprising a hollow body opening at its top into'a water pan and having depending flanges or aprons spaced upon the body, means for introducing a cooling liquid into said body, and water pipes opening at their upper ends into the said water pan and extending downwardly between the aprons and the body, substantiallyas described.

5. A valve or dampercomprising a frame member consisting of a casing formed ofinner'and oute'r walls, the inner wall sur end, a hollow valve body arranged to slide in said guideway and having a water pan at its top communicating with the. interior thereof, said valve having depending seal-v ing aprons arranged to extend through the openings'at the top of the frame into the water spaces thereof, and also having pipes communicating with this water pan and de- I pending into said water spaces, substantially as described. v

6. A valve or damper comprising a frame member consisting of a casing formed of inner and outer walls, the inner wall surrounding a transverse vertical 0 ening which extends downwardly within t e casing from the upper end thereof to form an inclosing guideway, said casing also having a horizontal flue opening intersecting the vertical opening, the spaces between the inner and outer walls of-thecasing at its upper portion being adapted to contain a cooling medium and having openings at its upper end, a hollow valve body arranged to slide in said guideway and having a water pan at its top communicating with the interior thereof, said valve having depending sealing aprons arranged to extend through the openings at the top of the frame into the water spaces thereof, and also having pipes communicating with this water pan and depending into said water spaces, the

an overflow receptacle adj aoent to said open- .ing, substantially as described.

' 7. The combination with a wall having 'a' flue opening therethrough,- of a hollow frame or casing set obliquely in said walland extending vu wardly therefrom, said frame havin a ue opening therethrough and having ront and rear water chambers at its'upper ortion, one of said water chambers terrnmating at the topof the flue, and a hollow Water-cooled valve arranged t0 's1ide and set in an inclined position' within saidframe member, substantially as described.

In testimony whereof, I have hereunto set my hand.

LUTHER L. KNOX.

Witnesses:

G120. B. BLEMING,

GEO. H. PABMELEE. 

